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wall off ['wɔ:l'ɔf]
tech. 套管固井; 堵塞墙缝; 堵塞壁缝; 封闭井壁
wall off
: 59 phrases in 13 subjects
Architecture3
Construction1
Electronics1
Engineering geology9
Explosives and Explosive Ordnance Disposal1
General1
Hydraulics1
Hydroelectric power stations1
Metallurgy4
Rail transport1
Technology32
Water polo2
Weightlifting2

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